共查询到20条相似文献，搜索用时 109 毫秒
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为有效提升竹木复合胶合板的生产效率,全面优化其生产工艺,从而实现有效降低成本的目的,目前在竹木复合胶合板的生产制作过程中大多都选用叠层结构设计方式。介绍了竹木复合胶合板的三种主要产品,分析了竹木复合胶合板的叠层结构设计优势,为优化提升竹木复合胶合板产品生产效率、改善提升产品力学性能提供参考。 相似文献
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采用成熟的竹木复合集装箱底板制造工艺,根据不同的组坯方式,用竹帘及杨木单板压制成竹木复合板和竹木复合层积材。该工艺的创新点在于只将杨木单板浸胶,而竹帘直接干燥铺装,以减少人工操作对竹帘的破坏。通过研究两种板的抗弯性能,发现其顺向抗弯性能非常好,可将其分别作为集装箱底板和建筑结构用材。此外,针对竹木复合板性能不稳定的问题提出了改进方案。 相似文献
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中国玩具源远流长,种类多样,其中的竹木玩具是社会发展过程中在生产和生活基础上创作而成,一定程度上反映了社会生活状态以及植物文化的发展演进,成为重要的文化遗产,但当前对传统竹木玩具的认识和利用方面存在研究不够系统、文化价值挖掘不够深入等问题。该文以传统竹木玩具为研究对象,基于对文献资料的考证,对古代绘画以及其他古代文物中的各种竹木玩具相关内容进行整理,对古代竹木制玩具的发展和演进过程进行总结与分析。将竹木玩具分为拼板益智类、牵引活动类、雕刻造型类、竹木编织类、人力活动类和其他类型,并对各自的特点进行概括,在此基础上探讨了古代竹木玩具的特性、优点和当代价值。提出了结合文化创意产品开发、挖掘传统设计智慧、传承弘扬传统文化等竹木玩具开发和利用的途径,以期对中国古代竹木文化有进一步拓展。 相似文献
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景园建筑中竹木结构的应用和防护 总被引：1，自引：0，他引：1
我国古代园林及现代游乐场所等地方的景园建筑中,常常应用竹木结构小品,但由于竹木材料往往有易腐易蛀的缺点,限制了竹木结构小品的应用范围及其安全使用寿命。而对景园建筑中竹木结构小品,采取从设计、选材、化学防腐防蛀处理、日常养护监测,到治疗补救等保护技术措施,是保护竹木结构的有效途径,能带来经济效益。 相似文献
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《Wood material science & engineering》2013,8(3-4):220-228
Abstract This study focuses on the water absorption and mechanical properties of composites made from softwood sawdust and plastics, such as virgin and recycled polypropylene and polylactic acid (PLA). The composites were processed by extrusion, and their properties were investigated by a water immersion test, mechanical tests and a cyclic test for moisture resistance. Scanning electron microscopy was used to study the morphology of the fracture surfaces of the composites. The composites made with recycled polypropylene had the lowest water absorption and thickness swelling of the studied composites. The PLA composites made with heat-treated sawdust showed the highest flexural strength. Of the polypropylene based composites, virgin polypropylene resulted in composites with higher flexural strength. The Charpy impact strength of the composites was found to have an inverse trend compared to flexural strength. Cyclic treatment of the studied composites resulted in 20–60% loss of flexural strength, depending on type of composite. 相似文献
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作为合聚俣物复合材料增强的木纤维素包括木纤维素粉和纤维素纤维。本文综述３个方面主要的研究进展；木纤维素粉在热固性塑料中的增强，用偶俣剂涂覆纤维素纤维在热塑性聚合物中的增强以及纤维素纤维在易生物降解聚俣物的增强。简要介绍了三类木纤维素增强复合材料的性质，指出最终的目标是制备符合环保要求完全物降解的复合材料。 相似文献
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Inthe21stcentury,thewoodsupplyinChinawillcontinLJetobelessthanthedemand,soChinawillneedtousewoodasetfectivelyasPossible.Theuseotwoodcompositesisaveryefficientwaytosavewood.ChinalackssLJfficientforeststomeetitsdemandforwood,especiallyinfinequalitywoods.BecauseofChina'spopulationandfiberdemand,efficientuseofwoocJismoreimportanttoChinathanthattosomeothercoLJntries.However,Chinawasneitherconvincedofthisandnordiditpayattentiontothestudyofwoodcompositesbeforethe1970's.FacingthewoodcrisisChinaf… 相似文献
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我国竹质复合材料研究现状与发展趋势 总被引：1，自引：0，他引：1
简要介绍了竹质复合材料的定义,详细论述了我国竹质复合材料的研究现状,对竹质复合材料的发展趋势进行了分析和讨论,并提出了几点看法. 相似文献
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S. Behnam Hosseini Sahab Hedjazi Loya Jamalirad 《Wood material science & engineering》2017,12(5):279-287
High-density polyethylene (HDPE), bagasse fibers treated by four pulping processes (AS-AQ (alkaline sulfite anthraquinone), SODA-AQ (soda anthraquinone), MEA (monoethanolamine) and chemical–mechanical pulping (CMP)), three levels of nano-SiO2 (0, 2, and 5?wt%), and maleic anhydride polyethylene as coupling agent were used to produce pulp–plastic composites (PPCs) by injection molding. The physical and mechanical properties of corresponding composites were evaluated according to ASTM standards. The results showed that compared to untreated bagasse/HDPE composite, the addition of bagasse pulp fibers increased significantly the mechanical properties such as tensile strength and modulus, flexural strength and modulus, and hardness. The chemical pulps-reinforced composites showed better mechanical strengths than that of CMP-reinforced composites, but in some properties, CMP pulp composites have comparable results to the chemical pulp-reinforced composites. Natural fibers (untreated and treated) increased water absorption and thickness swelling of composites compared to pure HDPE. The addition of nano-SiO2 particles showed both increasing and decreasing trends on physical and mechanical properties ofPPCs. 相似文献
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ABSTRACTIn this study, wood flour/polypropylene (WF/PP) composites were prepared by incorporating 2?wt% carbon materials with different morphologies, including carbon black (CB), graphite (G), and multi-walled carbon nanotubes (CNTs). WF/PP composite without any additives was included as a reference. All composites were placed in the accelerated UV weathering tester for a total of 960 h. The physical and mechanical properties of composites were compared. The changes in surface morphology and surface chemistry were characterized by SEM AFM, and ATR-FTIR. The results showed that: (1) the addition of CNTs improved both flexural and impact properties of composites; (2) composites containing CNTs exhibited better color stability and less severe surface cracking during weathering; and (3) ATR-FTIR results revealed that all the additives alleviated surface photo-oxidation of composites due to their UV-screening effect. Overall, due to the improved interfacial bonding between WF and PP, CNTs were more effective in protecting wood–plastic composites from photodegradation. 相似文献
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木／塑纤维复合材料在轿车工业中的应用前景 总被引：1，自引：0，他引：1
介绍了木／塑纤维复合材料的特点、采用的主要原材料的要求。同时简要介绍了复合材料加工工艺过程；我国在木／塑纤维复合材料领域的开发现状，并就复合材料在轿车工业中应用的市场前景进行了初步分析。 相似文献